28764260 has 48 divisors (see below), whose sum is σ = 72043776. Its totient is φ = 9432192.

The previous prime is 28764251. The next prime is 28764277. The reversal of 28764260 is 6246782.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 28764260.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1247 + ... + 7686.

It is an arithmetic number, because the mean of its divisors is an integer number (1500912).

Almost surely, 2^28764260 is an apocalyptic number.

28764260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28764260 is an abundant number, since it is smaller than the sum of its proper divisors (43279516).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28764260 is a wasteful number, since it uses less digits than its factorization.

28764260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8972 (or 8970 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 28764260 is about 5363.2322343900. The cubic root of 28764260 is about 306.3969246420.

The spelling of 28764260 in words is "twenty-eight million, seven hundred sixty-four thousand, two hundred sixty".